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压力引起的铁的电子自旋转变发生在下地幔的主要矿物中,这种转变对下地幔矿物的力学、物理学和化学等性质都会产生重要影响,因此在下地幔温度、压力条件下开展下地幔主要矿物相的自旋转变研究对下地幔地球物理学、地球化学和地球动力学等模型的约束具有重要意义。作为下地幔矿物质量分数第2的方镁铁矿,前人对其自旋转变以及这种转变对它的密度、声速、弹性性质、铁的分配、辐射热传导和电导率等的影响有广泛研究。本文旨在对方镁铁矿的自旋转变的主要研究进展进行总结和评述,并对未来该研究的发展趋势进行展望。
The pressure-induced electron spin transition of iron occurs in the main minerals of the lower mantle, and this transformation has a significant effect on the mechanics, physics and chemistry of the lower mantle minerals. Therefore, the lower mantle temperature and pressure are the major contributors to the lower mantle The study on the spin-change of mineral phases is of great significance for the constraints of the models of geophysics, geochemistry and geodynamics in the lower mantle. As a permanganite fraction 2, the authors have extensively studied the effects of spin transformation and its transformation on its density, sonic velocity, elastic properties, iron distribution, radiative heat transfer and electrical conductivity, etc. . The purpose of this paper is to summarize and review the main research progress of the spin-turn of the other mafic mines, and to forecast the development trend of this study in the future.